Re: headphone noise

I have the same problem. I tried what mortal says (going to recording devices). It worked, sort of. It drastically reduces the noise.

Model: 0197-27U

BIOS version (Latest?): 1.17

OS loaded (ex. Win 7 64bit): Win 7 64 bit

Lenovo default OS? -

Issue happen on Battery / AC / Both? Both

Noise on speakers / on headphones / both? None, straight from the hardware

Noise happen upon booting up or after Windows is loaded? After Windows is loaded

Updates from TVSU completed? -

Updates from Windows Updates? yes

Power Manager Version? -

Power Management Driver? -

RAM installed (brand and 1 x 4gb, 1 x 2gb, 2 x 2gb?) 3 GB

Any error notification before issue occured? No

3rd party application installed before issue happen?No

Any particular application which is running on the time this issue arises? No

Are you using any docking station? No

Additional comments which you think might help. When in BIOS menu, the noise is gone (drastically reduced). When in Windows 7 going to 'Recording Device', the noise is drastically reduced. When I disabled the Mic in the BIOS and went back to 'Recording Device' the noise did not go (or drastically reduced).

Re: headphone noise

It is definitely driver problem, i think that in linux there is no noise.

I can not confirm that. I have a dual boot configuration and the noise is the same under Linux. There is even noise during the early boot process when no sound drivers are loaded at all. The noise is reduced only, when the system is halted during bootup and there is no CPU, bus or other activitiy anymore.

I just got my Intel thinkpad edge 13 a few days ago and seem to having the same issues. I'd like to also note that changing the display brightness varies the pitch of the noise and the noise almost disappears when plugged into an outlet. Also, I have noticed that if you push(with considerable force) down on the headphone plug(toward the desk) the noise usually subsides. Obviously this is not a fix but maybe someone smarter than I can get to the root cause of the issue. Oh and mortal's fix didn't work for me

We are looking for volunteers in the Europe region who is able to send their machine in for evaluation. Kindly drop me a PM if you are interested.

//JameZ

Are you kidding? Lenovo pushes a defective product into the market, and then you expect people to send their computers in for evalutation? As has been stated the problem exists in each and every unit of the effected models. Just pick one out the production line.

Re: headphone noise

It is disappointing and laughable at the same time. I have to keep the sound window open all the time only to suppress the stupid annoying hiss (see the comment from Mortal). I also found out that the microphone windows does the same (reduces the hiss to a tolerable level).

I have nonetheless noticed when I accidentally let the battery run out that on my edge the problem dissappears completely when running low on power. The problem sadly returns while recharging the battery...